Year Total
1801 0.4348
1802 0.4348
1803 0.4348
1804 0.4347
1805 0.4348
1806 0.4348
1807 0.4347
1808 0.4348
1809 0.4348
1810 0.4348
1811 0.4347
1812 0.4348
1813 0.4347
1814 0.4348
1815 0.4348
1816 0.4348
1817 0.4348
1818 0.4347
1819 0.4348
1820 0.4347
1821 1.156
1822 1.156
1823 1.156
1824 1.156
1825 1.156
1826 1.156
1827 1.156
1828 1.156
1829 1.156
1830 1.156
1831 1.156
1832 1.156
1833 1.156
1834 1.156
1835 1.156
1836 1.156
1837 1.156
1838 1.156
1839 1.156
1840 1.156
1841 1.156
1842 1.156
1843 1.156
1844 1.156
1845 1.156
1846 1.156
1847 1.156
1848 1.156
1849 1.156
1850 1.156
1851 1.156
1852 1.156
1853 1.156
1854 1.156
1855 1.156
1856 1.156
1857 1.156
1858 1.156
1859 1.156
1860 1.156
1861 1.156
1862 1.156
1863 1.156
1864 1.156
1865 1.156
1866 1.156
1867 1.156
1868 1.156
1869 1.156
1870 1.156
1871 1.156
1872 1.156
1873 1.156
1874 1.156
1875 1.156
1876 1.156
1877 1.156
1878 1.156
1879 1.156
1880 1.156
1881 1.156
1882 1.156
1883 1.156
1884 1.156
1885 1.156
1886 1.156
1887 1.156
1888 1.156
1889 1.156
1890 1.156
1891 1.156
1892 1.156
1893 1.156
1894 1.156
1895 1.156
1896 1.156
1897 1.156
1898 1.156
1899 1.156
1900 1.156
1901 1.156
1902 1.156
1903 1.156
1904 1.156
1905 1.156
1906 1.156
1907 1.156
1908 1.156
1909 1.156
1910 1.156
1911 1.156
1912 1.156
1913 1.156
1914 2.674
1915 2.674
1916 2.674
1917 2.674
1918 2.674
1919 2.674
1920 2.674
1921 2.674
1922 2.674
1923 2.674
1924 2.674
1925 2.674
1926 2.674
1927 2.674
1928 2.674
1929 2.674
1930 2.674
1931 2.674
1932 2.674
1933 2.674
1934 2.674
1935 2.674
1936 2.674
1937 2.674
1938 2.674
1939 2.674
1940 2.674
1941 2.674
1942 2.674
1943 2.674
1944 2.674
1945 2.674
1946 2.674
1947 2.674
1948 2.674
1949 2.674
1950 2.674
1951 4.297
1952 4.263
1953 4.22
1954 4.26
1955 4.286
1956 4.215
1957 4.219
1958 4.22
1959 4.139
1960 1.821
1961 2.504
1962 2.721
1963 -0.5665
1964 4.384
1965 -0.08802
1966 2.449
1967 5.931
1968 7.2
1969 4.176
1970 5.646
1971 4.336
1972 -0.8965
1973 -2.212
1974 2.408
1975 1.616
1976 -2.914
1977 2.636
1978 -2.443
1979 9.851
1980 0.6937
1981 -8.805
1982 -2.092
1983 0.5094
1984 -3.919
1985 2.05
1986 0.5682
1987 2.125
1988 1.559
1989 4.05
1990 3.922
1991 -6.229
1992 1.294
1993 2.207
1994 0.1184
1995 1.841
1996 2.236
1997 3.864
1998 4.049
1999 4.842
2000 4.901
2001 6.063
2002 -12.66
2003 9.813
2004 5.281
2005 4.568
2006 5.282
2007 6.517
2008 7.42
2009 -3.849
2010 0.7153
2011 2.126
2012 2.833
2013 2.71